
var  speed =200;//滚动速度
//获取需要处理的DOM元素
var scroll_begin =document.getElementById("scroll_begin");
var  scroll_end =document.getElementById("scroll_end");
var scroll_box =document.getElementById("scroll_box");
//复制图片元素
scroll_end.innerHTML =scroll_begin.innerHTML;
//设置滚动区域
scroll_box.scrollLeft =0;
function marquee() {if (scroll_box.scrollLeft>=scroll_end.offsetWidth){
    scroll_box.scrollLeft-=scroll_begin.offsetWidth;
}else{
    scroll_box.scrollLeft++;
}

}
//定时滚动
setInterval(marquee(),speed);
//鼠标事件
scroll_box.addEventListener(
    "mouseover",
    function () {clearInterval(flag);

    }
);
scroll_box.addEventListener(
    "mouseout",
    function () {flag =setInterval(marquee(),speed);

    }
)